1. Newton’s First Law of Motion S08-S5C2-02 Identify the conditions under which an object will continue in its state of motion (Newton’s 1st Law of Motion).

2. What would Newton say about our air trollies? (How would he use his Laws to make sense of the trollies?) Level 1: Provide a specific example showing Newton’s First Law of Inertia. Level 2 add-on: Provide 2 different examples of acceleration. Level 3 add-on: Provide an example of action/reaction. Explain why for each.

3. FQ: What factors influence inertia? Level 1: Provide a specific example showing Newton’s First Law of Inertia. Level 2: Which scientists have contributed to our knowledge of inertia? Level 3 add-on: What would happen to our air trollies if Newton’s Laws worked inversely?

4. Newton’s First Law "An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force."

5. Inertia The natural tendency to resist changes in an object’s state of motion. Objects tend to keep doing what they’re already doing. – Resting objects tend to keep resting. – Moving objects tend to keep moving.

6. Aristotle’s Ideas about Physics (circa 350 B.C.) “Aristotle taught that the substances making up the Earth were different from the substance making up the heavens. He also taught that dynamics (the branch of physics that deals with motion) was primarily determined by the nature of the substance that was moving.” “a stone fell to the ground because the stone and the ground were similar in substance.” “smoke rose away from the Earth because in terms of the 4 basic elements it was primarily air (and some fire), and therefore the smoke wished to be closer to air and further away from earth and water.” http://csep10.phys.utk.edu/astr161/lect/history/aristotle_dynamics.html

7. Notions of Galileo Galilee (1600’s) http://www.physicsclassroom.com/class/newtlaws/Lesson-1/Inertia-and-Mass

8. Notions of Galileo Galilei (1600’s) http://www.physicsclassroom.com/class/newtlaws/Lesson-1/Inertia-and-Mass

9. Newton Asserted a force is not needed to keep a moving book in motion (1687). http://www.physicsclassroom.com/class/newtlaws/Lesson-1/Inertia-and-Mass

10. What conditions would allow a soccer ball to keep rolling at a constant velocity? What (setting/situation/environment) would allow a soccer ball to keep rolling at a (steady/unchanging) (speed moving in a given direction)?

11. What conditions would allow a soccer ball to keep rolling at a constant velocity? Outside forces applied in an equal and opposite manner. Balanced external forces

12. A rocket is launched into the air. What conditions would enable the rocket to continue in its state of motion forever? A rocket is launched into the air. What (setting/situation/environment) would (allow) the rocket to continue in its (situation/circumstance) of motion forever?

13. A rocket is launched into the air. What conditions would enable the rocket to continue in its state of motion forever? No air resistance or gravity. No drag or gravity. No air particles cause friction and there’s no gravity to cause acceleration.

14. A laptop and an iPad are in a state of rest. What would Newton say about the objects relating to his First Law? A laptop and an iPad are in a (situation/circumstance) of rest. What would Newton say about the objects relating to his Law of Inertia?

15. A laptop and an iPad are in a state of rest. What would Newton say about the objects relating to his First Law? Less force is required to move the iPad. More force is required to move the laptop. Both objects will stay at rest until acted upon by an unbalanced force.

16. 20 N = Newtons This is the unit used to measure force. What

17. 20 N = Newtons This is the unit used to measure force. What The “X” must indicate 20 N of force directed toward the ball.

18. 20 N = Newtons This is the unit used to measure force. in motion. What is true about

19. 20 in motion. What is true about If “X” is directed toward the ball, it must indicate less than 20 N of force. If the ball travels at a constant velocity, “X” is 20 N. If “X” is directed away from the ball, it may indicate any amount of force. Why is this?

20. What will happen in this situation? The cannon exerts 100 N and the cannon ball has a mass of 20 kg.

21. What will happen in this situation? The cannon exerts 100 N and the cannon ball has a mass of 20 kg. Outside forces will eventually cause the object to come to a complete stop.

22. What will happen in this situation?

23. The car will continue falling until Earth exerts a contact force on the car. (energy applied when objects touch)

24. Your turn on your own… 1. Galileo (ati-online) – S5C2-02: Newton's First Law (post) 2. FQ on index card – New example – Labeled sketch – Short explanation